Forging-machine.



No. 737,065. K L PATENTED AUG. 25,1903.

J. R. BL'AKESLEE.

PORGING MACHINE.

IPPLIGATION FILED IAN.11, 1901.

N0 MODEL. SHEETS SHEBT.1.

3 XQQMQ WUHQA g No. 737,065. PATENTED AUG. '25, 1903.

* J. R. BLAKESLEE.

FORGING MACHINE APPLICATION PILED'JANf 11 1901,

NO MODEL. 5 SHEETSSHEET 2,.

No.737,065.' v PATENTED AUG.25,1903.

' J. R. BLAKESLEE.

PORGING MACHINE.

APPLICATION FILED JAN. 11, 1901.

H0 MODEL. 5 SHEETS-SHEET 4.

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No. 737,065. PATENTED AUG. 25, 1903.

J. R. BLAKESLEE.

' FORGING MACHINE.

APPLICATION nub JAN. 11, 1901. x-o MODEL. 5 SHEETS-SHEET 5.

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PETERS co, Pua'rou'ma. WASNINGTON n c iio. 737,065.

JOHN ROLLIN BLAKESLEE, OF GLENVILLE, OHIO, ASSIGNORTO THE AJAX- Patented August 1 903;

PATIENT OFFICE.

v MANUFAOTURING OMPANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO.

F ORG lN G-M ACHlNEr srnoIFIoArroN forming part as LettersPatent no. 737,065, dated August 25, 1903.

Application filed January 11, 1901. Serial No.42.865. (No model.) I

T0 at whom it may concern;

Be it known that I, JOHN ROLLIN BLAKES- LEE, a citizen of the United States, and a resident of Glenville, county of Ouyahoga and State of Ohio, have invented a new and useful Improvement in Forging-Machines, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention relates to forging-machines, and hasfor its object the provision of mechanism for insuring exact and positive coordination in the operation of the die and forgingtool used in such devices while securing a comparatively large field of operation for such tool.

A further object is to provide a ready and safe means for interrupting the operation of such tool and die.

Said invention consists of means hereinafter fully described, and specifically set forth in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means, however, constituting but one of various forms in which the principle of the invention may be used,

I11 said annexed drawings, Figure I represents a top plan view of a forging-machine embodying my invention. Fig. II represents a longitudinal vertical section taken upon the plane indicated by the line 2 2, Fig. I, showing parts out by such plane in elevation. Fig. III represents a plan view of the connections intermediate of the reciprocable die and the reciprocable tool-slide, showing such con-' nections in the position which they occupy when the die is in its closed position and the tool-slide at the innermost extremity of its stroke. Fig. IV represents a view similar to that shown in Fig. III, showing the position opened and the tool-slide at the outermost extremity of its stroke. Figs. V and VI repoccupied by the connections when the die is tive view; Fig. VIII, an end View of the operating pitman, showing the guides in the tool-slide and the slide-blocks in transverse section; and Fig. IX represents a detail section. In one end of a frame Ais mounted a sta tionary die-block, dies B, and a die-slide B, reciprocable transversely of the frame in suitably-constructed slideways. A- headerslide 0 is mounted in suitably-constructed slideways and is reciprocable longitudinally, such reciprocation being effected through the medium of an operating-pitman E, journaled upon a crank-shaft F, driven by means of a driving-gear F, Fig. I.

Upon an upright pin 0, secured in and near one side of the slide 0, is journaled one end of a link g, whose opposite end is journaled upon the extremity of one arm g of a bellcrank G, which latter is journaled upon a fulcrum-pin g, fixed in the frame of the machine. The other arm, 9 of said crank forms a knuckle-joint with one end of a link g whose other end forms a knuckle-joint with one arm g of a second bell-crank G, journaled upon a fulcrum-pin g fixed similarly to pin 9. The other arm, g of said crank forms'a knucklejoint with one end of a link 9 the other end of which forms a knuckle-joint with one end of an arm G j ournaled upon a fixed furcrumpin g.

other end of such link being journaled upon a pin secured on a reciprocable die-slide B. A series of compounded levers is thus formed having three fixed fulcrums-namely, g, and g These levers and f-ulcrums are arranged so as to cause the radial components of the circumferential movements of at least three of the knuckle-joints and taken upon the radii in the planes passing through the axes of the fulcrum and connecting pins, respectively, to be a minimum at or near the inner extremity of the reciprocable die-slide stroke, so that the dies will be closed and sufficiently remain so before the completion of the inward'stroke of the headenslide. As illustrated in the drawings, the knucklejoints so arranged are those formed by bellcrank arm 9 and link g bell-crank arm 9 The end of a link g is journaled upon the pin g in the free end of arm G the and link g, and arm G and link g. By causing the circumferential movements of two of these joints (11 ot including that formed by arm l and link 9) to be continued, so as to permitthe axes of such joints to pass through and slightly beyond the planes passing through the axes of the outer ends of their component parts--that is, opposite link ends and the fulcrum-pins of the bell-cranks, respectively the above-named desired effect is further increased, since there is a considerable distance on each side of such plane, in which the beforeanentioned radial component is so small as to produce substantially no movement on the part of the die-block B. This field of practical inoperativeness of the knuckle-joints occurring twice creates a field of dimensions sufficient to add very materially to the length of that part of the stroke of the header-slide during which the die-slide remains practically stationary, thus materially increasing the field of operation of the said header-slide. By providing three joints, arranged as above described, I have found that the field of opera tion of the device is very markedly greater than that of the device shown, described, and claimed in Patent No. 579,814, issued to me March 30, 1897. Arm G and link 9 are caused to assume a position at and near the inner die-stroke extremity in which the centers of pins g g and g all lie substantially in the same plane as shown in Fig. III, whereby fulcrum-pin g is caused to receive the entire thrust from the die at such point and forming one element in obtaining the above-described desired minimum movement of the die at the end of its operative stroke. The reciprocation of the tool-slide is hence always accompanied by the reciprocation of the die B; but a much greater part of the reciprocation of the die is effected in the first part of its inward stroke than is effected in the tool-slide, so that the die-stroke is completed some time before the completion of the headerslide stroke. A blank placed between the dies is hence clamped and held some time be fore the completion of the tool-stroke, so that,

as is required by some kinds of upsetting or forging work, the tool may be caused to opcrate through a considerable field, gather a maximum amount of stock, and hence permit of the production of a class of work of this character heretofore unattained as a result of the increase in the field of operation previously mentioned and above described.

The header-slide is formed with a central opening 0, at one end of which is journaled the inner extremity of a movable member E, formed with an upward]y-projecting arm 6, having a roller-bearing e secured to the upper extremity thereof, as shown in Figs. II and V. The outer or free extremity of said member rests upon a pin E to which the inner end of the pitman E is journaled, as shown in Fig.VIII. The upper surface of said pin, which receives the member E, is beveled to receive a fiat contact-piece (2 The inner or slots, forming guides O in the slide 0 and in each side of the opening a. The lengths of said member E, pitman E, and slide-blocks K are made such as to cause said blocks to contact the outer ends of the guides when the pitman and movable member are in engagement with each other, as shown in dotted lines in Fi II and in Fig. IX.

Upon the upper portion of the frame and in the vicinity of the path of the header-slide is mounted in transverse slide bearings a plate L, formed with an inclined plane Z upon one edge portion, Fig. VII, and a slot Z. Upon a stud Z secured to said plate, is journaled a slide-block Z sliding in a yoke M, formed upon one arm of a bell-crank M, the other arm of which is connected with a rod M which may be longitudinally shifted by means of a bell-crank m, rod m, and springactuated treadle m The spring on", actuating said treadle, tends to maintain the plate L in its extreme position away from the header-slide. The depression of the treadle causes the plate to be moved inwardly, and upon occupying such position the inclined plane Z is projected into the path of the rollerbearing 6 and the slot Z brought into the path of movement which, as hereinafter described, is imparted to the yielding bolt it.

As before mentioned, reciprocation is imparted to the header-slide 0 through the medium of the crank-shaft F, the inward movement of the pitman being transmitted to the slide through the medium of the thrustbearing e upon the end of the movable member E and the outward movement being transmitted to the slide by virtue of the contact of the blocks K with the ends of the guides C during the engagement of the said member E and pitman E that is, during the normal operation of the machine. During such operation the bell-crank II is caused to oscillate, thereby alternately depressing and raising the bolt 7L, which strikes the surface of plate L and yields. hen it is desired to discontinue such operation, the treadle m is depressed, thereby projecting the inclined plane Z into the reeiprocatory path of the roller-bearing e. Upon the outward stroke of the slide C such bearing mounts the said inclined plane, thereupon disengaging the movable member E from the pitman, as shown in Fig. V. Upon the inward or return stroke of the pitman no movement of the slide follows, the blocks K sliding along their guides to the end of such inward stroke. Such interruption of movement of the slide maybe continued indefinitely by maintaining the treadle in its depressed. position. During the outward stroke in 'such described interrupted operation the bolt h enters the slot Z, and thereby prevents the retraction of the plate in the event of the release of the treadle and the consequent dropping through a considerable distance on the part of the member E, which might result in breakage of parts. place whenthe pitman is at or near the inner end of its stroke, at which point the distance from the pitman to the movable member is small, as shown in dotted lines, Fig. V. Such retraction then being effected by the release of the treadle, the said member drops a short distance and onto the pitman extremity. The subsequent outward pitman-stroke causes the said member to slide upon the pin E until at the end of the outward stroke reengagement of said member and pitman takes place, followed by a resumption of the operation of the head er-slide.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any one of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and dis-' tinctly claim as my invention-.

1. In a forging-machine, the combination of a reciprocable die-slide for gripping and holding the work, a reciprocable header-slide cooperating with said die-slide, and a series of compounded lever elements connected by links and connecting said two slides, and

- mounted upon three fulcrums fixed upon the machine-frame and-fforming circumferem tially-movable joints, two of such joints being located so that the axis of each is caused to pass through the plane passing through the axes of the outer ends of the joints, component parts when the header-slide traverses the end of its operative stroke.

2. In a forging-machine, the combination of a reciprocable header-slide, a pitman for operating same, a movable member intermediate of said slide and pitman extremity, and an inclined plane capable of movement into and out'of the reciprocatory path of said movable member and adapted to engage the lat ter and remove it from engagement with said pitman whereby the latter may be rendered inoperative.

3. In a forging machine, the combination of a reciprocable header-slide, a pitman for operating same, amovable member intermediate of said slide and pitman extremity, means capable of movement into the reciprocatory path of said movable member adapted to engage the latter and disengage same from said pitman, and means for locking said disengaging means while in such path.

Such retraction can hence only take 4. In a forging-machine, the combination of a reciprocable header-slide, a pitman for operating same having itsextremity supported upon blocks slidable in said slide, a movable member journaled upon the latter-engaging saidextremity, and provided with a roller, an inclined plane capable of movement so as to intersect the reciprocatory path of said roller and means connected with said pitman for locking said plane in such intersecting position.

5. In a bolt-heading machine, the combination with an operating-shaft, of a reciprocating die-block connected with the shaft operated thereby, a bolt-heading tool carried by the block, an operating-pitman, a movable auxiliary arm interposed between the pitman and the die-block, the latter being slotted to receive a pin in the pitman, permitting thelatter to reciprocate without moving the dieblock when the said arm is disconnected from the pitman, and suitable means for disconnecting the arm from the pitman,.comprising a slidable block arranged to be moved into the path of .a bearing on the said arm, the block being provided with an inclined face whereby the arm is raised for the purpose set forth.

6. The combination with an operating-shaft and pitman, of a die-block connected with the pitman to allow the latter to reciprocate without moving the block, a hinged stop-arm mov able on the die-block and adapted to engage the forward extremity of the pitman causing the latter to operate the block, asliding block for disconnecting the stop-arm from the pit.-

operating same, a movable member interme-.

diate'of said slide and pitman extremity, manually-operable means capable of movement into the reciprocating path of said movable member adapted to engage the latter and disengage same from said pitman, and means connected with and operated by the latter for lockin g such disengaging means while in said path.

JOHN ROLLIN BLAKESLEE' Attest:

Gno. WM. SA WELL, A. E. MERKEL.

Signed by me this 29th day of December,

It is hereby certified that in Letters Patent No. 7 37,065, granted August 25, 1903,

upon the application of John Rollin Blakeslee, of Glenville, Ohio, for an improvement,

infiForging-Machines, an error appears in the printed specification requiring correction, as follows: In line 44:, page 3, the comma after the word joints should be stricken out and an apostrophe inserted, making the clause read of the joints component parts; and that the said Letters vPatent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of September, A. D., 1903.

F. I. ALLEN,

Commissioner of Patents,

' [SEAL] 

